WorksheetsUnit 2 Test Review
Total questions: 33
Worksheet time: 1hrs 6mins
What is the unit of measurement for force?
Joules
Newtons
Watts
Meters
What happens when forces are balanced?
There is movement
There is no net force and no movement
The object speeds up
The object changes direction
What is a vector?
A measure of mass
A force and direction
A type of energy
A unit of time
According to the Law of Electric Charges, what happens when like charges are near each other?
They attract
They repel
They combine
They neutralize
What happens to an atom when electrons are added to it?
It becomes positive
It becomes neutral
It becomes negative
It remains unchanged
What is the purpose of a spring scale?
To measure temperature
To measure time
To measure the force required to lift objects
To measure distance
What is the primary function of electrochemical cells?
To convert electrical energy into chemical energy
To convert chemical energy into electrical energy
To store mechanical energy
To produce thermal energy
Which part of the electrochemical cell is negatively charged?
Cathode
Anode
Electrolyte
Semi-permeable barrier
What role does the electrolyte play in an electrochemical cell?
It stores energy
It removes electrons from the anode
It removes electrons from the cathode
It provides mechanical support
Diagram of an electrochemical cell showing electron flow from anode to cathode.
Electron flow from anode to cathode
Electron flow from cathode to anode
Electron flow from positive to negative
Electron flow from negative to positive
What is the function of a resistor in a circuit?
Converts electrical energy to light energy
Measures the voltage across a component
Converts electrical energy to thermal energy
Provides electrical energy to a circuit
Which device allows you to open or close a circuit?
Resistor
Switch
Voltmeter
Ammeter
What does a voltmeter measure?
Current flowing around a circuit
Voltage across a component
Electrical energy to sound energy
Converts electrical energy to mechanical energy
What is the role of a fan/motor in a circuit?
Converts electrical energy to light energy
Converts electrical energy to sound energy
Converts electrical energy to mechanical energy
Measures the current flowing around a circuit
Which device measures the current flowing around a circuit?
Voltmeter
Ammeter
Buzzer
LED
What does a buzzer do in a circuit?
Converts electrical energy to light energy
Converts electrical energy to sound energy
Measures the voltage across a component
Provides electrical energy to a circuit
What is a load in a circuit?
A device that measures voltage
A device that uses electrical energy to do work
A device that converts electrical energy to sound
A device that provides electrical energy
What is the function of a cell (battery) in a circuit?
Converts electrical energy to light energy
Provides electrical energy to a circuit
Measures the current flowing around a circuit
Converts electrical energy to sound energy
What does a lightbulb do in a circuit?
Converts electrical energy to light energy
Converts electrical energy to sound energy
Measures the voltage across a component
Provides electrical energy to a circuit
What does LED stand for?
Light Emitting Device
Light Emitting Diode
Light Energy Device
Light Energy Diode
What is an open circuit?
A circuit with a complete closed path
A circuit where electricity flows without interruption
A circuit in which the flow of electricity is interrupted
A circuit that allows electricity to pass through easily
Which of the following is an example of a conductor?
Popsicle sticks
Crayons
Aluminum foil
Rubber bands
What is the unit of measurement for current?
Volts (V)
Ohms (Ω)
Amps (A)
Watts (W)
How is voltage measured?
Using an ammeter
Using a voltmeter
Using a thermometer
Using a barometer
What is resistance?
The speed at which electrons flow
The potential difference in a circuit
The opposition to the flow of electricity
The amount of energy produced per charged particle
What happens to the current when the resistance increases?
The current increases.
The current decreases.
The current stays the same.
The current doubles.
Which of the following is NOT a factor that determines resistance?
Length of the wire
Width of the wire
Color of the wire
Temperature
What is the unit of measurement for resistance?
Volts
Amperes
Ohms
Watts
Which device is used to measure current?
Voltmeter
Ammeter
Multimeter
Thermometer
According to Ohm's Law, how is voltage (V) calculated?
V = I + R
V = I / R
V = I x R
V = R / I
What is the role of conductors in a circuit?
To block the flow of electricity
To allow the flow of electricity
To store electrical energy
To convert electricity into light
Which device is used to measure current in a circuit?
Voltmeter
Thermometer
Ammeter
Barometer
What is the purpose of measuring voltage in a circuit?
To determine the speed of electrons
To find the resistance of the circuit
To measure the electrical potential difference
To calculate the power consumption
